Geri Halliwell Horner Expecting Second Child

10/10/2016 at 11:55 AM ET

Geri Halliwell pregnant
Dave Benett/Getty

Geri Halliwell Horner is about to be a mama for the second time!

The former Spice Girls member — known as Ginger Spice throughout her time with the group — is pregnant and expecting her first child with husband Christian Horner, her rep confirms to PEOPLE.

Geri took to Instagram Monday to confirm the exciting news.

“God bless Mother Nature #mamaspice,” Geri, 44, wrote next to a drawing of a pregnant woman underneath the same text.

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God bless Mother Nature #mamaspice 👶🏼

A post shared by Geri Horner 🌻 (@therealgerihalliwell) on

Geri and the Formula1 racing team boss have been together since early 2014, and were married in England in May 2015. Among the guests were Geri’s former bandmate Emma Bunton, A.K.A. Baby Spice.

The fashion-forward bride wore a gown by London-based coture designer Phillipa Lepley and arrived at the event in a vintage Rolls Royce, while her beloved arrived in a 1965 Aston Martin.

Hello , just wanna say hi. (just had lunch , full. )😌

A post shared by Geri Horner 🌻 (@therealgerihalliwell) on

Bluebell is customising a jacket

A post shared by Geri Horner 🌻 (@therealgerihalliwell) on

The newest member of the Horner family will join 10-year-old big sister Bluebell Madonna, Geri’s daughter from a previous relationship.

Jen Juneau

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Brooke on

I cannot believe Bluebell is 10. Wow…it seems like she JUST had her

KTB on

Aww so sweet!! God Bless!! 🙂

Go Ginger! on

What a beautiful family.